ds in 1892.

OKA, a river of Central Russia, which rises in Orel and flows N.,
then E., then N. again, joining the Volga at Nijni-Novgorod after a
course of over 700 m., navigable nearly all the way; on its banks are
Orel, Kaluga, and Riazan, while Moscow stands on an affluent.

OKEN, LORENZ, German naturalist; was professor first at Jena, then
at Muenich, and finally at Zurich, his settlement in the latter being due
to the disfavour with which his political opinions, published in a
journal of his called the _Iris_, were received in Germany; much of his
scientific doctrine was deduced from a transcendental standpoint or by _a
priori_ reasonings; is mentioned in "Sartor" as one with whom
Teufelsdroeck in his early speculations had some affinity (1779-1851).

OKHOTSK, SEA OF, an immense sheet of water in Eastern Siberia, lying
between the peninsula of Kamchatka and the mainland, with the Kurile
Islands stretched across its mouth; is scarcely navigable, being infested
by fogs.

OKLAHOMA (62), a United States territory, stretching southward from
Kansas to the Red River, with Texas on the W. and Indian Territory on the
E., is a third larger than Scotland, and presents a prairie surface
crossed by the Arkansas, Cimarron, and Canadian Rivers, and rising to the
Wichita Mountains in the S. There are many brackish streams; the rainfall
is light, hence the soil can be cultivated only in parts. Ceded to the
United States under restrictions by the tribes of the Indian Territory in
1866, there were various attempts by immigrants from neighbouring States
to effect settlements in Oklahoma, which the Government frustrated by
military interference, maintaining the treaty with the Indians till 1889,
when it finally purchased from them their claim. At noon on April 22,
1889, the area was opened for settlement, and by twilight 50,000 had
entered and taken possession of claims. The territory was organised in
1890; embedded in it lies the Cherokee Outlet, still held by the Indians,
but on the extinction of their interests to revert to Oklahoma. The chief
town is Oklahoma (5).

OKUMA, COUNT, a Japanese, rose into office from the part he took in
the Japanese Revolution of 1868, held in succession but resigned the
offices of Minister of Finance and of Foreign Affairs, organised the
Progressive Party in 1881, and entered office again in 1896; organised in
1898 the first government for a time in Japan on a party basis agreeably
to h